Combined cap and oil-cup.



COMBINED GAP AND OIL 0UP.

APPLICATION FILED 001.15. 1909.

R.MGNAUGHTON.

Patented May 2, 1911.

FUNTTED STATES PATENT @FFTQE ROBERT IVICNAUGHTON, 0F WARRAGUL, VICTORIA, AUSTRALIA.

COMBINED CAP AND OIL-CUP.

To all whom 'it may concern:

Be it known that I, ROBERT MCNAUGHTON, a subject of the King of Great Britain, residing at Victoria street, Warragul, in the State of Victoria, Commonwealth of Australia, have invented a Combined Cap and Oil-Cup, of which the following is a specification.

With axles at present in use the cap is usually enlarged and hollowed so as to form a reservoir for containing a comparatively large amount of lubricating oil, which surrounds the end of the axle to which it has free access. Caps of this nature are however found to be inconvenient, as with their use the oil escapes too freely and is wasted, while moreover the preliminary fixing of the same is difiicult and other defects are also apparent.

Now this invention has been devised with the object of providing a cap adapted to contain a considerable supply of oil, but so arranged that only the required amount may be delivered to the axle when desired. Said cap is also eminently adapted for use on shafts or bearings such as on marine or other engines. Accordingly the cap is di vided internally into two compartments one of which forms a reservoir for the storage of oil and which is normally closed against the other compartment, which surrounds the axle or shaft, by means of a plate, valvehead or the like held firmly in position, preferably by a spring but adapted to be operated from the outside of said cap in such a manner that said plate is momentarily unseated and the required amount of oil admitted to said compartment which surrounds the shaft. It will be readily understood that with this arrangement no oil is wasted and the axle or shaft can be readily lubricated in a simple and eflicient manner.

In the accompanying drawing the figure is an elevation of a carriage axle partly in section and a central longitudinal section of a journal box and of a combined cap and oil cup embodying my invention.

According to this invention the cap A is provided about the middle of its inner surface with a projecting rib 1 extending around its entire internal circumference while one end of said cap is formed with a longitudinal, inwardly, projecting sleeve 2, which is preferably formed integral with the cap. Said sleeve 2 is provided near its inner end with an internal shoulder 3 against Specification of Letters Fatent.

Application filed October 15, 1909.

Patented May 2, 1911. Serial No. 522,796.

which one end of a spiral spring 4 bears, while the other end of said spring contacts with a head or button 5, which is screwed or otherwise fastened to the shank 6 of a valve head 7. This valve head is of substantially the same diameter as the interior of the cap and divides the cap into two compartments and said head is provided on its inner face with a covering 8 of leather, rubber or other suitable material, which normally bears against the rib 1 and the inner face 9 of said sleeve 2. A suitable washer 10 or other packing is also preferably provided at the shoulder 3 and against this the spring 4 actually bears.

It will be readily understood that normally the spring 4 draws the valve head 7 with its somewhat resilient facing 8 firmly against the rib 1 and the inner face 9 of said sleeve 2, but when the bead or button 5, which protrudes slightly outside of the cap proper, is pushed inwardly it compresses the spring 4 and at the same time forces the valve head 7 from off its seat. This allows a quantity of oil or other suitable lubricant which has previously been placed in the outer compartment-or reservoir 11, to escape into the inner compartment 12 from where it works onto the shaft or axle to be lubricated.

The cap A is connected with the parts to be lubricated by means of internal screw threads (4 formed in the cap, which threads engage external screw threads formed on the periphery of the ournal box B which is rotatably mounted on an axle C and retained thereon by a nut cl which screws on the threaded end of the axle, said nut being provided with a flange d which engages the end of the box in the usual manner. The oil that escapes from the reservoir 11 into the compartment 12, when the head 7 is removed from its seat, readily works between the flange d and the end of the journal box and onto the axle.

In practice it is found sufficient with ordinary buggies to momentarily press and re lease the head or button 5 to admit a suflicient amount of light oil to amply lubricate the parts for a journey of some 200 to 300 miles.

I claim 1. A combined cap and oil cup comprising a tubular casing internally screw threaded at one end and having an internal annular flange on its inner surface substantially midway between its ends, said casing having a tubular sleeve formed integral with one end thereof and projecting to the plane of said flange, said sleeve having an internal flange near its inner end, a valve stem projecting through said sleeve, a head on one end of the valve stem, a coiled spring surrounding the stem and engaging the integral flange and said head, and a valve on the valvestem normally seated on the annular flange and the inner end of the sleeve.

2. The combination With an externally threaded ournal box, of an internally threaded cylindrical casing adapted to screw onto said box, said casing having an internal flange formed on its inner surface and a tu- U bular sleeve formed on one end of said casing projecting longitudinally of and concentric with said inner surface forming an annular oil reservoir, and a valve stem projecting through the sleeve having a valve on its inner end, said valve being normally seated'on the flange and inner end of the sleeve.

In testimony whereof I ha e hereunto set my hand in presence of two subscribing Witnesses.

ROBERT MGNAUGHTON.

Witnesses EDWARD N. WATERS, l/VILLIAM HERBERT WVATERs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G. 

